/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   Contains CNcdSubscriptionManagerProxy class implementation

*

*/

#include "ncdsubscriptionmanagerproxy.h"

#include "ncdsubscriptiongroupproxy.h"

#include "ncdsubscriptionproxy.h"

#include "ncdsubscriptionoperationproxy.h"

#include "ncdoperationimpl.h"

#include "ncddownloadoperationproxy.h"

#include "ncdoperationmanagerproxy.h"

#include "ncdoperationdatatypes.h"

#include "catalogsclientserver.h"

#include "ncdnodeidentifier.h"

#include "ncdnodefunctionids.h"

#include "ncdnodeclassids.h"

#include "catalogsinterfaceidentifier.h"

#include "catalogsutils.h"

#include "ncdutils.h"

#include "catalogsconstants.h"

#include "ncdsubscriptionmanagerlistener.h"

#include "catalogsdebug.h"

// ======== PUBLIC MEMBER FUNCTIONS ========

CNcdSubscriptionManagerProxy::CNcdSubscriptionManagerProxy(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CCatalogsInterfaceBase* aParent,

    CNcdOperationManagerProxy& aOperationManager )

    : CNcdInterfaceBaseProxy( aSession, aHandle, aParent ),

      iOperationManager( aOperationManager )

    {

    }

void CNcdSubscriptionManagerProxy::ConstructL()

    {

    DLTRACEIN((""));

    // Register the interface

    MNcdSubscriptionManager* interface( this );

    AddInterfaceL( CCatalogsInterfaceIdentifier::NewL( 

                        interface, this,

                        MNcdSubscriptionManager::KInterfaceUid ) );

    // Create listener.

    iListener = CNcdSubscriptionManagerListener::NewL( *this );

    iInputBuf.CreateL( 1 );

    iOutputBuf.CreateL( 1 );

    // Is it ok if internalization fails here?

    // Earlier comment: Do not let the internalization leave here.

    //                  This object may be reinternalized later.

    InternalizeL();

    // Send an asynchronous message to server side subscription manager to be notified

    // when subscription states are changed in server side.

    ClientServerSession().SendAsync(

        NcdNodeFunctionIds::ENcdListenerEnrollment,

        iOutputBuf,

        iInputBuf,

        Handle(),

        iListener->iStatus );

    iListener->Activate();

    DLTRACEOUT((""));

    }

CNcdSubscriptionManagerProxy* CNcdSubscriptionManagerProxy::NewL(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CCatalogsInterfaceBase* aParent,

    CNcdOperationManagerProxy& aOperationManager )

    {

    CNcdSubscriptionManagerProxy* self = 

        CNcdSubscriptionManagerProxy::NewLC( aSession,

                                             aHandle,

                                             aParent,

                                             aOperationManager );

    CleanupStack::Pop( self );

    return self;

    }

CNcdSubscriptionManagerProxy* CNcdSubscriptionManagerProxy::NewLC(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CCatalogsInterfaceBase* aParent,

    CNcdOperationManagerProxy& aOperationManager )

    {

    CNcdSubscriptionManagerProxy* self = 

        new( ELeave ) CNcdSubscriptionManagerProxy( aSession,

                                                    aHandle,

                                                    aParent,

                                                    aOperationManager );

    // Using PushL because the object does not have any references yet

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

CNcdSubscriptionManagerProxy::~CNcdSubscriptionManagerProxy()

    {

    // Remove interfaces implemented by this class from the interface list.

    // So, the interface list is up to date when this class object is deleted.

    RemoveInterface( MNcdSubscriptionManager::KInterfaceUid );

    iSubscriptionGroups.ResetAndDestroy();

    delete iListener;

    iInputBuf.Close();

    iOutputBuf.Close();

    }

void CNcdSubscriptionManagerProxy::SetNodeManager(

    CNcdNodeManagerProxy* aManager )

    {

    // Not owned so no deletion needed for possible previous object

    iNodeManager = aManager;

    }

void CNcdSubscriptionManagerProxy::InternalizeL()

    {

    DLTRACEIN((""));

    // Request the subscription group identifiers from server.

    RPointerArray<CNcdKeyValuePair> groupIds = SubscriptionGroupIdentifiersL();    

    CleanupResetAndDestroyPushL( groupIds );

    DLINFO(("Amount of ids received: %d", groupIds.Count() ));

    // Release the subscription groups that don't exist in server side.

    DeleteMissingSubscriptionGroups( groupIds );

    // Reinternalize existing subscriptiongroup.

    InternalizeSubscriptionGroupsL();

    // Remove the subscription groups from the array which are up to date currently.

    for ( TInt i = groupIds.Count() - 1; i >= 0; i-- ) 

        {

        if ( SubscriptionGroup( groupIds[i]->Value(), groupIds[i]->Key() ) != NULL ) 

            {

            delete groupIds[i];

            groupIds.Remove( i );

            }

        }

    // Request handles to the new subscription groups

    CBufBase* buf = CBufFlat::NewL( KBufExpandSize );

    CleanupStack::PushL( buf );

    RBufWriteStream writeStream( *buf );

    CleanupClosePushL( writeStream );

    writeStream.WriteInt32L( groupIds.Count() );

    for ( TInt i = 0; i < groupIds.Count(); i++ ) 

        {

        groupIds[i]->ExternalizeL( writeStream );

        }

    CleanupStack::PopAndDestroy( &writeStream );

    HBufC8* dataToSend = HBufC8::NewL( buf->Size() );

    dataToSend->Des().Copy( buf->Ptr( 0 ) );

    CleanupStack::PopAndDestroy( buf );

    CleanupStack::PushL( dataToSend );

    HBufC8* data( NULL );

    DLINFO(("Request buffer: %S", dataToSend ));

    // Because we do not know the exact size of the data, use

    // the alloc method, which creates the buffer of the right size

    // and sets the pointer to point to the created buffer.

    // Get all the data that is necessary to internalize this object

    // from the server side.

    User::LeaveIfError(

        ClientServerSession().

        SendSyncAlloc( NcdNodeFunctionIds::ENcdInternalize,

                       *dataToSend,

                       data,

                       Handle(),

                       0 ) );

    if ( data == NULL )

        {

        DLERROR((""));

        User::Leave(  KErrNotFound );

        }

    CleanupStack::PopAndDestroy( dataToSend );

    CleanupStack::PushL( data );

    // Read the data from the stream and insert it to the memeber variables

    RDesReadStream stream( *data );

    CleanupClosePushL( stream );

    TRAPD( internalizeError, InternalizeDataL( stream ) );

    if ( internalizeError != KErrNone )

        {

        // Should check that no handles are left to the

        // stream. If there are, release messages should

        // be sent to the server side with those handles.

        iSubscriptionGroups.ResetAndDestroy();

        User::Leave( internalizeError );

        }

    // Closes the stream

    CleanupStack::PopAndDestroy( &stream ); 

    CleanupStack::PopAndDestroy( data );

    CleanupStack::PopAndDestroy( &groupIds );

    DLTRACEOUT((""));    

    }

TBool CNcdSubscriptionManagerProxy::ActiveSubscriptionExists(

    const TDesC& aEntityId,

    const TDesC& aNamespace,

    const TDesC& aPurchaseOptionId )

    {

    DLTRACEIN((""));

    CNcdSubscriptionProxy* searchedSubscription( NULL );

    searchedSubscription = Subscription( aEntityId,

                                         aNamespace,

                                         aPurchaseOptionId );

    if ( searchedSubscription != NULL )

        {

        if ( searchedSubscription->SubscriptionStatus() ==

                 MNcdSubscription::ESubscriptionActive )

            {

            DLTRACEOUT(("Return ETrue"));

            return ETrue;

            }

        }    

    DLTRACEOUT(("Return EFalse"));

    return EFalse;

    }

CNcdSubscriptionProxy* CNcdSubscriptionManagerProxy::Subscription(

    const TDesC& aEntityId,

    const TDesC& aNamespace,

    const TDesC& aPurchaseOptionId )

    {

    DLTRACEIN((""));    

    CNcdSubscriptionProxy* resultSubscription( NULL );

    // First find the subscription group...

    CNcdSubscriptionGroupProxy* group( NULL );

    group = SubscriptionGroup( aEntityId, aNamespace );

    if ( group != NULL )

        {        

        // then subscription...

        resultSubscription = group->Subscription( aPurchaseOptionId );

        }

    DLTRACEOUT((""));

    return resultSubscription;

    }

void CNcdSubscriptionManagerProxy::SubscriptionsChangedL() 

    {

    DLTRACEIN((""));

    // Send new listener enrollment message to server side.

    ClientServerSession().SendAsync(

        NcdNodeFunctionIds::ENcdListenerEnrollment,

        iOutputBuf,

        iInputBuf,

        Handle(),

        iListener->iStatus );

    iListener->Activate();

    // Internalize the data from server.

    InternalizeL();

    }

// MNcdSubscriptionManager functions

// ---------------------------------------------------------------------------

// Subscriptions are now under subscription groups so they are not

// kept in one large array.

// Benefit from the one large array would be that the returning of

// all subscriptions in this function would be easy but because

// the array would have to be updated or remade after every

// update from server (which is always before this function) it seems

// that keeping up the large array does not benefit us. Atleast

// not in this function.

// ---------------------------------------------------------------------------

//

RCatalogsArray<MNcdSubscription> 

    CNcdSubscriptionManagerProxy::SubscriptionsL() const

    {

    DLTRACEIN(( "" ));

    // When ui asks for subscriptions it does it in the

    // management view so the ui should update the subscriptions

    // from the server before this function. Update is not done here.

    // Let's make one array out of the subscriptions

    RCatalogsArray<MNcdSubscription> subscriptions;

    // in case of leave, destroy its contents (release)

    CleanupResetAndDestroyPushL( subscriptions );

    TInt groupCount( iSubscriptionGroups.Count() );

    TInt groupIndexer( 0 );

    DLINFO(( "Coming to while" ));

    while ( groupIndexer < groupCount )

        {

        // through all groups

        const RPointerArray<CNcdSubscriptionProxy>& subscriptionsOfGroup

            = iSubscriptionGroups[groupIndexer]->Subscriptions();

        TInt subscriptionCount( subscriptionsOfGroup.Count() );

        TInt subscriptionIndexer( 0 );

        DLINFO(( "Coming to while2" ));

        while ( subscriptionIndexer < subscriptionCount )

            {

            // through all subscriptions of group

            subscriptions.AppendL(

                subscriptionsOfGroup[subscriptionIndexer] );

            subscriptionsOfGroup[subscriptionIndexer]->AddRef();        

            ++subscriptionIndexer;

            }

        ++groupIndexer;

        }

    CleanupStack::Pop( &subscriptions );

    DLTRACEOUT(( "" ));

    return subscriptions;

    }

MNcdSubscriptionOperation* 

    CNcdSubscriptionManagerProxy::RefreshSubscriptionsL(

        MNcdSubscriptionOperationObserver& aObserver )

    {

    DLTRACEIN((""));

    CNcdSubscriptionOperationProxy* operation( NULL );

    operation =

        iOperationManager.CreateSubscriptionRefreshOperationL( aObserver );

    DLTRACEOUT((""));

    return operation;

    }

// Other functions

CNcdOperationManagerProxy&

    CNcdSubscriptionManagerProxy::OperationManager() const

    {

    return iOperationManager;

    }

void CNcdSubscriptionManagerProxy::InternalizeDataL( RReadStream& aStream )

    {

    DLTRACEIN((""));    

    TInt handleAmount( 0 );

    handleAmount = aStream.ReadInt32L();

    DLTRACE(( "Amount of subscriptiongroup handles received: %d",

              handleAmount ));

    TInt tmpProxyHandle( -1 ); // handle of a proxy read from stream

    // temporary pointer to subscription group that is going to be

    // added to subscriptiongroups-array

    CNcdSubscriptionGroupProxy* tmpSubscriptionGroup( NULL );

    // In error handling, objects with received handles

    // should be released from the server side session

    // if proxies for them cannot be created.

    TInt handleIndex( 0 );

    while ( handleIndex < handleAmount )

        {

        tmpProxyHandle = aStream.ReadInt32L();

        DLTRACE(( "Received subscriptiongroup handle: %i",

                  tmpProxyHandle ));

        tmpSubscriptionGroup = CNcdSubscriptionGroupProxy::NewL( 

                                ClientServerSession(),

                                tmpProxyHandle,

                                OperationManager(),

                                *iNodeManager );                

        TRAPD( addError, iSubscriptionGroups.AppendL( tmpSubscriptionGroup ) );

        if ( addError != KErrNone )

            {

            delete tmpSubscriptionGroup;

            User::Leave( addError );

            }

        ++handleIndex;

        }

    DLTRACEOUT((""));

    }

RPointerArray<CNcdKeyValuePair> CNcdSubscriptionManagerProxy::SubscriptionGroupIdentifiersL() const 

    {

    DLTRACEIN((""));

    HBufC8* data( NULL );

    // Because we do not know the exact size of the data, use

    // the alloc method, which creates the buffer of the right size

    // and sets the pointer to point to the created buffer.

    User::LeaveIfError(

        ClientServerSession().

        SendSyncAlloc( NcdNodeFunctionIds::ENcdSubscriptionGroupIdentifiers,

                       KNullDesC8,

                       data,

                       Handle(),

                       0 ) );

    if ( data == NULL )

        {

        DLERROR((""));

        User::Leave(  KErrNotFound );

        }

    CleanupStack::PushL( data );

    // Read the data from the stream and insert it to the memeber variables

    RDesReadStream stream( *data );

    CleanupClosePushL( stream );

    TInt32 identifierCount = stream.ReadInt32L();

    RPointerArray<CNcdKeyValuePair> identifiers;

    CleanupResetAndDestroyPushL( identifiers );

    identifiers.ReserveL( identifierCount );

    for ( TInt i = 0 ; i < identifierCount; i++ ) 

        {

        CNcdKeyValuePair* pair = CNcdKeyValuePair::NewL( stream );

        TInt err = identifiers.Append( pair );

        // Error should not be possible since there should be enough room to append.

        DASSERT( err == KErrNone );

        }

    CleanupStack::Pop( &identifiers );

    CleanupStack::PopAndDestroy( &stream );

    CleanupStack::PopAndDestroy( data );

    return identifiers;

    }

void CNcdSubscriptionManagerProxy::DeleteMissingSubscriptionGroups(

    const RPointerArray<CNcdKeyValuePair>& aGroupIdentifiers ) 

    {

    DLTRACEIN((""));

    for ( TInt i = iSubscriptionGroups.Count() - 1; i >= 0; i-- ) 

        {

        const TDesC& nameSpace = iSubscriptionGroups[i]->Namespace();

        const TDesC& entityId = iSubscriptionGroups[i]->EntityId();

        TBool found = EFalse;

        for ( TInt idIndexer = 0; idIndexer < aGroupIdentifiers.Count(); idIndexer++ ) 

            {

            if ( aGroupIdentifiers[idIndexer]->Key() == nameSpace &&

                 aGroupIdentifiers[idIndexer]->Value() == entityId ) 

                {

                found = ETrue;

                break;

                }

            }

        if ( !found ) 

            {

            delete iSubscriptionGroups[i];

            iSubscriptionGroups.Remove( i );

            }            

        }

    }        

void CNcdSubscriptionManagerProxy::InternalizeSubscriptionGroupsL() const 

    {

    DLTRACEIN((""));

    for ( TInt i = 0; i < iSubscriptionGroups.Count(); i++ ) 

        {

        iSubscriptionGroups[i]->InternalizeL();

        }

    }